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    "#### 路由链RouterChain(了解)\n",
    "    路由链用于创建可以动态选择下一条链的链。可以自动分析用户的需求，然后引导到最适合的链中执行，获取响应并返回最终结果。\n",
    "    比如，我们有三类chain，分别对应三种学科的问题解答。我们的输入内容也是与这三种学科对应，但是随机的，比如第一次输入数学问题，第二次有可能是历史问题...\n",
    "    这时候期待的效果是：可以根据输入内容是什么，自动将其应用到对应的子链中。\n",
    "    RouterChain就为我们提供了这样一种能力。"
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